Abstract: High vacuum sealing with soft metal marriage is adopted to provide the best choice to realize sampling seal when exploring the Luna,Mars and other plants.The process of high vacuum sealing technology has the advantages of easy realization,high adaptability and high sealing property.Through the process test for obtaining ingredient percentage of sealing material,confirming the configuration and the accuracy knife edge,acquiring depth of the knife edge entrance,etc..It has been solved by the technological test,which can meet the requirements of the spacecraft application,and it completely can adapt to the space environment of the atrocious high vacuum and high radiation,high and low temperature.